Results 211 to 220 of about 707,197 (266)

Cardiac Heat Production

Annual Review of Physiology, 1979
The energy production (heat + work) of cardiac muscle must be interpreted in terms of the major ATPases underwriting cardiac contraction; these are the Ca2+ and Na+-K+ transport ATPases and actomyosin ATPase. It is possible to apply the classical phenomenological subdivisions to cardiac energy production; when this is done, certain properties ...
C L, Gibbs, J B, Chapman
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Heat production from shivering

Journal of Applied Physiology, 1960
Healthy young men were exposed, nearly nude, for 2 hours or less to various environmental conditions (dry-bulb temperature, 90°–20°F; windspeed, μ1, 5, 10 mph). Oxygen consumption was recorded at intervals during exposure. The results show that even under conditions where no visible shivering was observed, there was an increase in heat production ...
P F, IAMPIETRO, J A, VAUGHAN, R F, GOLDMAN, M B, KREIDER, F, MASUCCI, D E, BASS   +5 more
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Thermoregulatory Heat Production in the Brain

Nature, 1959
THE increase in the metabolic rate elicited in homoiothermal animals by exposure to cold is attributed by many investigators exclusively to striated muscle. According to others the liver and intestine have also to be considered as a source of extra heat, but only a few stress the importance of these viscera1,2.
S, DONHOFFER, G, SZEGVARI, I, JARAI, M, FARKAS   +3 more
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Heat recovery in thermoplastics production

Energy Conversion and Management, 2002
An energy optimization of production of a thermoplastic material nylon-6 using boiler flue gases heat recovery is presented. Energy and environmental studies show an increase of process efficiency simultaneously with a decrease of thermal pollution. Various combinations of flue gases heat recovery for combustion air or feed water preheating result in ...
Mihelić-Bogdanić, Alka, Budin, Rajka
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Heat Production in a Cardiac Contraction

Nature, 1965
THE energetics of cardiac contraction, a field of much physiological interest, has remained incompletely developed because of the difficulty of performing heat measurements on a heart muscle preparation. We have recently succeeded in solving some of the technical difficulties and have developed a procedure for myothermic measurements on isolated ...
N V, Ricchiuti, C L, Gibbs
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Heat Production and Senescence

Journal of the American Geriatrics Society, 1974
ABSTRACT: The decline in animal heat production begins near conception and is continuous throughout life. The rate of decline varies with each species of homeothermic animal. The fixed minimum of heat production reached near senescent death is independent of the species and appears to be a constant value of approximately 20 calories ...
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Heat production during sleep

Journal of Applied Physiology, 1984
Heat production during sleep was studied by continuous indirect calorimetry with simultaneous electroencephalographic monitoring. Controlling for gross influences on heat production, comparisons of heat production during different sleep stages showed heat production in stage 4 sleep to be significantly lower than in other sleep stages.
C M, Shapiro, C C, Goll, G R, Cohen, I, Oswald   +3 more
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Heat Production by Ultrasonic Equipment

Journal of Pharmaceutical Sciences, 1974
Temperature profiles were developed for several ultrasonic instruments over varying time intervals with two volumes of water. A wide range of temperatures at different power levels was noted.
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